US8199116B2 - Display panel, display device having the same and method of detecting touch position - Google Patents
Display panel, display device having the same and method of detecting touch position Download PDFInfo
- Publication number
- US8199116B2 US8199116B2 US11/518,707 US51870706A US8199116B2 US 8199116 B2 US8199116 B2 US 8199116B2 US 51870706 A US51870706 A US 51870706A US 8199116 B2 US8199116 B2 US 8199116B2
- Authority
- US
- United States
- Prior art keywords
- signal lines
- electrodes
- protruded
- lines
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
Definitions
- the present invention relates to a display panel, a display device having the display panel, and a method of detecting touch position on the display device. More particularly, the present invention relates to a display panel capable of performing a touch screen function, a display device having the display panel, and a method of detecting the touch position on the display device.
- a display device is a device that displays an image so that a user recognizes processed information that is processed by a processing unit.
- a flat panel display device has various characteristics such as a relatively small size, a relatively lightweight structure, and a relatively high resolution, etc., so that the flat panel display device has been widely used.
- LCD liquid crystal display
- the LCD device displays the image using liquid crystals.
- Liquid crystals vary arrangement in response to an electric field applied thereto, and thus a light transmittance of the liquid crystals is changed.
- the LCD device includes an LCD panel.
- the LCD panel includes an array substrate having a thin film transistor (“TFT”) that is a switching element, an opposite substrate facing the array substrate, and a liquid crystal layer interposed between the array substrate and the opposite substrate.
- TFT thin film transistor
- the LCD device in general, includes an input part having a control interface and a system part that calculates data to output a control signal. The data is applied to the system part through the input part. The LCD device displays the image through a one-way communication using the control signal.
- the LCD device can further include a touch panel that receives data using icons displayed on a screen of the LCD device so that the user can directly input the data to the LCD panel.
- the touch panel is on an uppermost portion of the LCD device to make contact with a finger or a touching object so that the user selects information displayed on the screen of the LCD device.
- the touch panel detects a touch position on which the finger or the touching object makes contact with the screen, and changes the touch position into an input signal to apply the input signal to the LCD device.
- an additional input part such as a keyboard, a mouse, etc.
- an additional input part such as a keypad is unnecessary.
- the touch panel has been widely used.
- the touch panel When the touch panel is formed on the LCD panel, a thickness and a size of the LCD device having the touch panel is increased.
- the touch panel is integrally formed with the LCD device.
- the LCD device includes a photo sensor that detects a shadow formed by the finger or the touching object blocking the light when touching the touch panel or detects additional light generated from a light pen touching the touch panel.
- an amount of the light sensed by the light sensor is dependent on an amount of an ambient light. That is, when the amount of the ambient light is increased, the amount of the light sensed by the light sensor is increased. Also, when the amount of the ambient light is decreased, the amount of the light sensed by the light sensor is decreased. Therefore, sensing capability of the light sensor is deteriorated so that the touch panel does not detect the touch position of the finger or the touching object.
- the present invention provides a display panel capable of performing touch screen function using an array substrate and an opposite substrate.
- the present invention also provides a display device having the above-mentioned display panel.
- the present invention also provides a method of detecting touch position on the display device.
- a display panel in accordance with exemplary embodiments of the present invention includes an array substrate and an opposite substrate.
- the array substrate includes a plurality of pixels, a plurality of first signal lines, and a plurality of second signal lines.
- the pixels are formed in regions defined by a plurality of gate lines and a plurality of data lines crossing the gate lines.
- the first signal lines are extended substantially in parallel with the gate lines.
- the second signal lines are extended substantially in parallel with the data lines.
- the opposite substrate is combined with the array substrate, interposing a liquid crystal layer there between.
- the opposite substrate includes an opposite base substrate and first and second protruded electrodes.
- the first and second protruded electrodes are formed in regions corresponding to the first and second signal lines, respectively.
- the first and second protruded electrodes are electrically connected to the first and second signal lines, respectively, when applied with an externally provided pressure.
- a display device in accordance with exemplary embodiments of the present invention includes a display panel, a panel driving part, a touch position detecting part, and a position determining part.
- the display panel of the display device includes an array substrate and an opposite substrate.
- the array substrate includes a plurality of gate lines, a plurality of data lines, a plurality of first signal lines extended substantially in parallel with the gate lines, and a plurality of second signal lines extended substantially in parallel with the data lines.
- the opposite substrate is combined with the array substrate, interposing a liquid crystal layer there between.
- the opposite substrate includes an opposite base substrate, and a plurality of protruded electrodes electrically connected to the first and second signal lines when applied with an externally provided pressure.
- the panel driving part applies gate and data signals to the gate and data lines, respectively.
- the touch position detecting part detects first and second signal -lines electrically connected to protruded electrodes to output a detection signal.
- the position determining part determines position coordinates of the externally provided pressure based on the detection signal.
- a method of detecting touch position on a display device in accordance with exemplary embodiments of the present invention is provided as follows.
- An initial driving voltage is applied to first and second signal lines formed on an array substrate.
- a portion of the first and second signal lines is electrically connected to a portion of protruded electrodes on an opposite substrate in response to an externally provided pressure, the protruded electrodes corresponding to the first and second signal lines, respectively, the portion of the first and second signal lines receiving a common voltage from the portion of protruded electrodes.
- the portion of the first and second signal lines electrically connected to the portion of the protruded electrodes is detected to output a first detection signal and a second detection signal.
- a voltage level of the portion of the first and second signal lines is changed by the electrical connection between the portion of the first and second signal lines and the portion of the protruded electrodes.
- Position coordinates corresponding to the externally provided pressure are determined based on the first and second detection signals.
- the display panel includes the touch screen function not including a light sensor so that a thickness of the display panel is decreased.
- the touch position is not dependent on ambient light, but is instead determined based on a variation of a voltage or a current so that the touch position is precisely detected.
- FIG. 1 is a block diagram illustrating an exemplary display device according to an exemplary embodiment of the present invention
- FIG. 2 is a plan view illustrating an exemplary display panel assembly according to an exemplary embodiment of the present invention
- FIG. 3 is a perspective view illustrating an exemplary display panel according to an exemplary embodiment of the present invention.
- FIG. 4 is a plan view illustrating a portion of an exemplary display panel according to an exemplary embodiment of the present invention.
- FIG. 5 is a cross-sectional view taken along line V-V′ in FIG. 4 ;
- FIG. 6 is a cross-sectional view illustrating the exemplary display panel of FIG. 4 when an external pressure is applied to an exemplary opposite substrate;
- FIG. 7 is a plan view illustrating a portion of an exemplary display panel according to another exemplary embodiment of the present invention.
- FIG. 8 is a cross-sectional view taken along line VIII-VIII′ in FIG. 7 ;
- FIG. 9 is a cross-sectional view illustrating an exemplary display panel according to another exemplary embodiment of the present invention.
- FIG. 10 is a cross-sectional view illustrating an exemplary display panel according to another exemplary embodiment of the present invention.
- FIG. 11 is a flow chart showing an exemplary method of detecting touch position according to another exemplary embodiment of the present invention.
- FIG. 12 is a block diagram illustrating an exemplary method of detecting touch position on a portion of an exemplary display device according to another exemplary embodiment of the present invention.
- FIG. 13 is a timing diagram illustrating the exemplary method of detecting the touch position in FIG. 11 ;
- FIG. 14 is a schematic circuit view illustrating an exemplary touch position detecting part according to the exemplary method shown in FIG. 13 ;
- FIG. 15 is a schematic circuit view illustrating another exemplary touch position detecting part according to the exemplary method shown in FIG. 11 .
- first, second, third etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention.
- spatially relative terms such as “beneath,” “below,” “lower,” “above,” “upper” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the exemplary term “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
- Embodiments of the invention are described herein with reference to cross-section illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of the invention. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the invention should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an implanted region illustrated as a rectangle will, typically, have rounded or curved features and/or a gradient of implant concentration at its edges rather than a binary change from implanted to non-implanted region.
- a buried region formed by implantation may result in some implantation in the region between the buried region and the surface through which the implantation takes place.
- the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the invention.
- FIG. 1 is a block diagram illustrating an exemplary display device according to an exemplary embodiment of the present invention.
- FIG. 2 is a plan view illustrating an exemplary display panel assembly according to an exemplary embodiment of the present invention.
- FIG. 3 is a perspective view illustrating an exemplary display panel according to an exemplary embodiment of the present invention.
- the display device 100 includes a display panel 200 , a panel driving part 300 , a touch position detecting part 400 , and a position determining part 500 .
- the display panel 200 includes an array substrate 210 , an opposite substrate 220 , and a liquid crystal layer (not shown).
- the array substrate 210 includes a plurality of switching elements, such as thin film transistors (“TFTs”).
- TFTs thin film transistors
- the opposite substrate 220 faces the array substrate 210 .
- the liquid crystal layer is interposed between the array substrate 210 and the opposite substrate 220 .
- the array substrate 210 may further include a plurality of data lines DL 1 , DL 2 , . . . DLm, also known as source lines, arranged in a row direction, a first direction, of the array substrate 210 and a plurality of gate lines GL 1 , GL 2 , . . . GLn, also known as scan lines, arranged in a column direction, a second direction substantially perpendicular to the first direction, of the array substrate 210 .
- DL 1 , DL 2 , . . . DLm also known as source lines
- GL 1 , GL 2 , . . . GLn also known as scan lines
- the number of gate lines GL 1 , GL 2 , . . . GLn of the array substrate 210 is n, and the gate lines GL 1 , GL 2 , . . . GLn are extended in a first direction D 1 .
- the number of data lines DL 1 , DL 2 , . . . DLm of the array substrate 210 is m, and the data lines DL 1 , DL 2 , . . . DLm are extended in a second direction D 2 that is substantially perpendicular to the first direction D 1 .
- a plurality of pixels is formed in a matrix configuration in regions defined by the gate and data lines GL 1 , GL 2 , . . . GLn and DL 1 , DL 2 , . . . DLm.
- ‘n’ and ‘m’ are natural numbers.
- a TFT 211 of the TFTs and a pixel electrode 212 are formed where the first data line DL 1 crosses the first gate line GL 1 .
- a gate electrode of the TFT 211 is electrically connected to the first gate line GL 1 .
- a source electrode of the TFT 211 is electrically connected to the first data line DL 1 .
- a drain electrode of the TFT 211 formed within a same layer as the source electrode but separated from the source electrode, is electrically connected to the pixel electrode 212 .
- the m ⁇ n TFTs are formed in which the data lines DL 1 , DL 2 , . . . DLm cross the gate lines GL 1 , GL 2 , . . . GLn.
- the array substrate 210 may further include a plurality of first signal lines SL 1 and a plurality of second signal lines SL 2 to perform a touch screen function.
- the first signal lines SL 1 are extended in the first direction D 1
- the second signal lines SL 2 are extended in the second direction D 2 .
- the first signal lines SL 1 cross the second signal lines SL 2 , and are electrically insulated from the second signal lines SL 2 , as they are formed in different layers of the array substrate 210 , as will be further described below.
- An initial driving voltage Vid having a predetermined level is applied from the power supply part 320 to the first and second signal lines SL 1 and SL 2 that are formed on the array substrate 210 .
- the first and second signal lines SL 1 and SL 2 are electrically connected to the touch position detecting part 400 (shown in FIG. 1 ).
- the first and second signal lines SL 1 and SL 2 may be formed in unit pixel parts, respectively.
- Each of the unit pixel parts includes a red (R) pixel, a green (G) pixel, and a blue (B) pixel, although alternately colored pixels forming a unit pixel part would also be within the scope of these embodiments.
- the first and second signal lines SL 1 and SL 2 may correspond to a plurality of unit pixel parts.
- the first and second signal lines SL 1 and SL 2 may be formed in every four unit pixel parts, respectively.
- the opposite substrate 220 faces the array substrate 210 , and is combined with the array substrate 210 with the liquid crystal layer interposed there between.
- the opposite substrate 220 may be a color filter substrate having a plurality of color filters. Alternatively, the color filters may be formed on the array substrate 210 .
- the opposite substrate 220 may further include a plurality of protruded electrodes ER for performing the touch screen function.
- the protruded electrode ER is electrically connected to one of the first signal lines SL 1 and/or one of the second signal lines SL 2 that are formed on the array substrate 210 .
- the protruded electrodes include a plurality of first protruded electrodes ER 1 and a plurality of second protruded electrodes ER 2 .
- the first protruded electrodes ER 1 are electrically connected to a first signal line SL 1 a of the first signal lines SL 1 at a plurality of points.
- the second protruded electrodes ER 2 are electrically connected to a second signal line SL 2 a of the second signal lines SL 2 .
- the first and second protruded electrodes ER 1 and ER 2 are formed on the opposite substrate 220 corresponding to the first and second signal lines SL 1 a and SL 2 a.
- the first and second protruded electrodes ER 1 and ER 2 may be formed in the unit pixel parts, respectively, where, for example, each of the unit pixel parts includes a red (R) pixel, a green (G) pixel, and a blue (B) pixel.
- the first and second protruded electrodes ER 1 and ER 2 may correspond to a plurality of the unit pixel parts.
- the first and second protruded electrodes ER 1 and ER 2 may be formed in every four unit pixel parts, respectively.
- the array substrate 210 includes the first signal lines SL 1 and the opposite substrate 220 includes the first protruded electrodes ER 1 to detect y-coordinates of the touch position.
- the first protruded electrode ER 1 is electrically connected to one of the first signal lines SL 1 so that a level of the initial driving voltage Vid applied to the first signal line SL 1 is changed, thereby detecting the y-coordinates of the externally provided pressure PO on the display panel 200 .
- the array substrate 210 includes the second signal lines SL 2 and the opposite substrate 220 includes the second protruded electrodes ER 2 to detect x-coordinates of the touch position.
- the second protruded electrode ER 2 is electrically connected to one of the second signal lines SL 2 so that a level of the initial driving voltage Vid applied to the second signal line SL 2 is changed, thereby detecting the x-coordinates of the externally provided pressure PO on the display panel 200 .
- the panel driving part 300 includes a timing controlling part 310 , a power supply part 320 , a gray-scale voltage generating part 330 , a data driving part 340 , and a gate driving part 350 .
- the timing controlling part 310 controls an operation of the display device 100 .
- the timing controlling part 310 generates a first data signal DATA 1 , a second control signal CNTL 2 , a third control signal CNTL 3 , and a fourth control signal CNTL 4 based on red (R), green (G) and blue (B) primary data signals DATA_ 0 , and a first control signal CNTL 1 and a fifth control signal CNTL 5 .
- the red (R), green (G) and blue (B) primary data signals DATA_ 0 and the first control signal CNTL 1 are provided from an exterior to the timing controlling part 310 of the display panel 200 .
- the first control signal CNTL 1 includes a main clock signal MCLK, a horizontal synchronizing signal HSYNC, and a vertical synchronizing signal VSYNC.
- the second control signal CNTL 2 includes a horizontal start signal STH, an inversion signal REV, and a data load signal TP for controlling the data driving part 340 .
- the third control signal CNTL 3 includes a start signal STV, a clock signal CK, and an output enable signal OE, etc., for driving the gate driving part 350 .
- the fourth control signal CNTL 4 includes another clock signal CLK and an inversion signal REV.
- the timing controlling part 310 controls timing of the primary data signal DATA_ 0 to apply a timing controlled R′, G′ and B′ first data signal DATA 1 to the data driving part 340 .
- the timing controlling part 310 may further output a fifth control signal CNTL 5 for controlling the touch position detecting part 400 .
- the fifth control signal CNTL 5 includes another clock signal for controlling the initial driving voltage Vid that is outputted from the power supplying part 320 so that the initial driving voltage Vid is applied to the first and second signal lines SL 1 and SL 2 .
- the power supplying part 320 generates common voltages Vcom and Vcst applied to the display panel 200 , the initial driving voltage Vid applied to the array substrate 210 for performing the touch screen function, an analog driving voltage AVDD applied to the gray-scale voltage generating part 330 , and gate on/off voltages Von and Voff applied to the gate driving part 350 based on the fourth control signal CNTL 4 outputted from the timing controlling part 310 .
- the gray-scale voltage generating part 330 generates a plurality of reference gray-scale voltages VGMA_R corresponding to the number of gray-scales based on a division resistor having a resistance ratio corresponding to a gamma curve using the analog driving voltage AVDD from the power supply part 320 as a reference voltage.
- the data driving part 340 includes a data tape carrier package (“TCP”) 341 .
- the array substrate 210 is electrically connected to a data printed circuit board (“PCB”) 360 on which the timing controlling part 310 is formed through the data TCP 341 .
- PCB data printed circuit board
- the data lines DL 1 , DL 2 , . . . DLm may be grouped into a plurality of groups, and a plurality of data TCPs 341 may be electrically connected to the groups, respectively.
- Each of the data TCPs 341 generates a gray-scale voltage VGMA based on the reference gray-scale voltage VGMA_R outputted from the gray-scale voltage generating part 330 .
- the data TCP 341 changes the first data signal DATA 1 of a digital type into a plurality of data signals D 1 , D 2 , . . . Dm of an analog type based on the second control signal CNTL 2 from the timing controlling part 310 and based on the gray-scale voltage VGMA.
- the data TCP 341 controls an output timing of an application of the data signals D 1 , D 2 , . . . Dm to the data lines DL 1 , DL 2 , . . . DLm, respectively.
- the gate driving part 350 includes a gate TCP 351 .
- the gate driving part 350 may further include a plurality of gate TCPs 351 to divide the gate lines GL 1 , GL 2 , . . . GLn into a plurality of groups.
- the gate TCPs 351 applies a plurality of gate signals G 1 , G 2 , . . . Gn based on the third control signal CNTL 3 outputted from the timing controlling part 310 and the gate on/off voltages Von and Voff outputted from the power supply part 320 to the gate lines GL 1 , GL 2 , . . . GLn, respectively.
- the touch position detecting part 400 detects a location of the externally provided pressure PO that is applied to the opposite substrate 220 .
- one of the first protruded electrodes ER 1 may be electrically connected to one of the first signal lines SL 1 extended in the first direction D 1 of the array substrate 210 to change the level of the initial driving voltage Vid applied to the first signal line SL 1 , thereby detecting the y-coordinates of the externally provided pressure PO.
- one of the second protruded electrodes ER 2 may also be electrically connected to one of the second signal lines SL 2 extended in the second direction D 2 of the array substrate 210 to change the level of the initial driving voltage Vid applied to the second signal line SL 2 , thereby detecting the x-coordinates of the externally provided pressure PO.
- the touch position detecting part 400 may further include a voltage controlling part and a data sampling part, as will be further described below.
- the voltage controlling part applies the initial driving voltage Vid to the first and second signal lines SL 1 and SL 2 based on the fifth control signal CNTL 5 .
- the data sampling part detects the variation of the initial driving voltage Vid on the first and second signal lines SL 1 and SL 2 to output first and second detection signals DS 1 and DS 2 .
- the touch position detecting part 400 may be formed on the data driving part 340 of the panel driving part 300 . That is, the touch position detecting part 400 may be integrally formed with a data driving chip 342 on the data TCP 341 of the data driving part 340 .
- the data driving chip 342 may further include additional pads electrically connected to the first and second signal lines SL 1 and SL 2 , where the first signal lines SL 1 may be bent at right angles at one end thereof as shown in FIG. 3 to connect to the data driving part 340 .
- the position determining part 500 processes the y-coordinates and the x-coordinates based on the first and second detection signals DS 1 and DS 2 outputted from the touch position detecting part 400 to determine the position of the externally provided pressure PO on the display panel 200 .
- FIG. 4 is a plan view illustrating a portion of an exemplary display panel according to an exemplary embodiment of the present invention.
- the display panel 200 includes an array substrate 210 , an opposite substrate 220 , and a liquid crystal layer (not shown) interposed between the array substrate 210 and the opposite substrate 220 .
- the array substrate 210 includes a plurality of pixels arranged in a matrix shape. Each of the pixels is a unit for displaying an image.
- a ji-th pixel Pji includes a j-th gate line GLj, an i-th data line DLi, a ji-th TFT Tji and a ji-th pixel electrode PEji.
- the j-th gate line GLj is extended in a first direction D 1 of the array substrate 210 .
- the i-th data line DLi is extended in a second direction D 2 of the array substrate 210 .
- the second direction D 2 is substantially perpendicular to the first direction D 1 .
- the j-th gate line GLj is electrically insulated from the i-th data line Dli, such as by a gate insulating layer, as will be further described below.
- the i-th data line DLi, the j-th gate line GLj, an (i+1)-th data line DLi+1 adjacent to the i-th data line DLi, and a (j ⁇ 1)-th gate line GLj ⁇ 1 adjacent to the j-th gate line GLj define a ji-th pixel region PAji.
- the ji-th TFT Tji and the ji-th pixel electrode PEji are formed in the ji-th pixel region PAji.
- a gate electrode G of the ji-th TFT Tji is electrically connected to the j-th gate line GLj.
- a source electrode S of the ji-th TFT Tji is electrically connected to the i-th data line DLi.
- a drain electrode D of the ji-th TFT Tji is electrically connected to the ji-th pixel electrode PEji.
- the ji-th TFT Tji applies an i-th data signal from the i-th data line DLi to the ji-th pixel electrode PEji based on a j-th gate signal from the j-th gate line GLj.
- the ji-th pixel Pji may further include a ji-th storage voltage line SEji that receives a common voltage Vcom and defines an auxiliary capacitance Cst.
- the array substrate 210 may further include a plurality of first signal lines SL 1 and a plurality of second signal lines SL 2 .
- the first signal lines SL 1 are extended in the first direction D 1 , and are substantially parallel with the gate lines GLj ⁇ 1 and GLj.
- the second signal lines SL 2 are extended in the second direction D 2 , and are substantially parallel with the data lines DLi and DLi+1.
- the first signal lines SL 1 may be formed from a substantially same layer of the array substrate 210 as the gate lines GLj ⁇ 1 and GLj, and the second signal lines SL 2 may be formed from a substantially same layer of the array substrate 210 as the data lines DLi and DLi+1.
- An initial driving voltage Vid is applied to the first and second signal lines SL 1 and SL 2 .
- the array substrate 210 may further include a plurality of first sensing electrodes ES 1 formed on the first signal lines SL 1 .
- the first sensing electrodes ES 1 correspond to a plurality of first protruded electrodes ER 1 of the opposite substrate 220 .
- a first sensing electrode ES 1 is electrically connected to a corresponding first protruded electrode ER 1 when an externally provided pressure PO (shown in FIG. 6 ) is applied to the first protruded electrode ER 1 .
- the array substrate 210 may further include a plurality of second sensing electrodes ES 2 formed on the second signal lines SL 2 .
- the second sensing electrodes ES 2 correspond to a plurality of second protruded electrodes ER 2 of the opposite substrate 220 .
- a second sensing electrode ES 2 is electrically connected to a corresponding second protruded electrode ER 2 when an externally provided pressure PO is applied to the second protruded electrode ER 2 .
- FIG. 5 is a cross-sectional view taken along line V-V′ in FIG. 4 .
- FIG. 6 is a cross-sectional view illustrating the exemplary display panel of FIG. 4 when an external pressure is applied to an exemplary opposite substrate.
- the array substrate 210 includes a base substrate 200 a , a TFT array layer 200 b , and a pixel electrode layer 212 .
- the base substrate 200 a includes a transparent insulating material, such as, but not limited to, glass, quartz, etc.
- the TFT array layer 200 b is on the base substrate 200 a .
- the TFT array layer 200 b includes a plurality of TFTs 211 , a passivation layer 200 c , and a planarizing layer 200 d.
- Each TFT 211 includes a gate electrode 211 a , a gate insulating layer 211 b , an active layer 211 c , an ohmic contact layer 211 d , a source electrode 211 e , and a drain electrode 211 f.
- the passivation layer 200 c may include, for example, an inorganic insulating layer covering the TFTs 211 .
- the planarizing layer 200 d is formed on the passivation layer 200 c , and may include, for example, an organic insulating layer that planarizes the array substrate 210 .
- the first signal lines SL 1 may be formed on the base substrate 200 a and are formed from a substantially same layer as the gate electrode 211 a as well as the gate lines GL and any storage electrode lines SE.
- the gate insulating layer 211 b , the passivation layer 200 c , and the planarizing layer 200 d cover the first signal lines SL 1 .
- the first signal lines SL 1 are electrically insulated from the first protruded electrodes ER 1 .
- the second signal lines SL 2 may be formed on the gate insulating layer 211 b from a substantially same layer as the source electrodes 211 e and the drain electrodes 211 f as well as the data lines DL.
- the passivation layer 200 c and the planarizing layer 200 d cover the second signal lines SL 2 .
- the second signal lines SL 2 are electrically insulated from the second protruded electrodes ER 2 .
- the first sensing electrodes ES 1 are formed on the planarizing layer 200 d so that the first sensing electrodes ES 1 may be electrically connected to the first protruded electrodes ER 1 .
- the first sensing electrodes ES 1 are formed from a same layer of the array substrate 210 as the pixel electrode layer 212 .
- the first sensing electrodes ES 1 are electrically connected to the first signal lines SL 1 through a contact hole through which the first signal lines SL 1 are partially exposed.
- the contact hole for partially exposing the first signal lines SL 1 is formed through the gate insulating layer 211 b , the passivation layer 200 c and the planarizing layer 200 d.
- the second sensing electrodes ES 2 may also be formed on the planarizing layer 200 d so that the second sensing electrodes ES 2 may be electrically connected to the second protruded electrodes ER 2 .
- the second sensing electrodes ES 2 may be formed from a same layer of the array substrate 210 as the pixel electrode layer 212 .
- the second sensing electrodes ES 2 are electrically connected to the second signal lines SL 2 through a contact hole through which the second signal lines SL 2 are partially exposed.
- the contact hole for partially exposing the second signal lines SL 2 may be formed through the passivation layer 200 c and the planarizing layer 200 d.
- the opposite substrate 220 includes an opposite base substrate 220 a , a protrusion 220 b , and a common electrode layer 220 c .
- the opposite substrate 220 may further include a plurality of protrusions 220 b.
- the opposite base substrate 220 a includes a transparent insulating material, such as, but not limited to, glass, quartz, a synthetic resin, etc.
- the opposite base substrate 220 a includes polycarbonate (“PC”) to be easily bent in response to an externally provided pressure PO.
- PC polycarbonate
- a glass substrate may be etched or grinded to form the opposite base substrate 220 a having a thickness of about 0.2 mm to about 0.5 mm.
- the protrusions 220 b may include insulating material such as silicon oxide, and are protruded from the opposite base substrate 220 a.
- a portion of the protrusions 220 b correspond to the first signal lines SL 1 that are formed on the array substrate 210 .
- a plurality of protrusions 220 b corresponds to each of the first signal lines SL 1 .
- another portion of the protrusions 220 b correspond to the second signal lines SL 2 that are formed on the array substrate 210 .
- the protrusions 220 b may also correspond to the first and second signal lines SL 1 and SL 2 .
- the protrusions 220 b are protruded from the opposite base substrate 220 a toward the array substrate 210 by a predetermined height.
- a height of each of the protrusions 220 b is smaller than a cell-gap, where the cell-gap is a distance between the array substrate 210 and the opposite substrate 220 .
- the common electrode layer 220 c is formed on the opposite base substrate 220 a .
- the common electrode layer 220 c may be formed on a substantially entire surface of the opposite base substrate 220 a .
- the common electrode layer 220 c includes a transparent conductive material, such as, but not limited to, indium tin oxide (“ITO”), indium zinc oxide (“IZO”), etc.
- the common electrode layer 220 c covers the protrusions 220 b .
- the opposite base substrate 220 a corresponding to one of the protrusions 220 b is bent toward the array substrate 210 so that a portion of the common electrode layer 220 c on the protrusion 220 b makes electrical contact with one of the first sensing electrodes ES 1 .
- the common electrode layer 220 c is in turn electrically connected to the first signal line SL 1 .
- the protrusion 220 b and the portion of the common electrode layer 220 c on the protrusion 220 b form the first protruded electrode ER 1 that is protruded from the opposite base substrate 220 a toward the array substrate 210 .
- the first protruded electrodes ER 1 are formed in a region corresponding to a black matrix of the opposite substrate 220 , where the black matrix surrounds color filters of the opposite substrate 220 .
- the first protruded electrodes ER 1 and the first sensing electrodes ES 1 are not overlapped with transmission regions of the pixels so that opening rate of the pixels is not decreased. In other words, the aperture ratio of the pixels is not decreased because of the locations of the first protruded electrodes ER 1 and the first sensing electrodes ES 1 .
- each of the first signal lines SL 1 that are extended in the first direction Dl includes a branch line BR that is branched from the first signal line SL 1 in the second direction D 2 , as shown in FIG. 4 .
- each of the first signal lines SL 1 may include a plurality of branch lines BR.
- the first sensing electrodes ES 1 may be formed on the branch line BR corresponding to the first protruded electrodes ER 1 formed in the region of the opposite substrate 220 corresponding to the black matrix.
- each of the first protruded electrodes ER 1 may be formed between a unit pixel part having a (ji ⁇ 1)-th pixel, a ji-th pixel and a (ji+1)-th pixel and an adjacent unit pixel part, and the black matrix covers the first protruded electrode ER 1 .
- Each of the unit pixel parts may include a red (R) pixel, a green (G) pixel, and a blue (B) pixel that display red, green, and blue colors, respectively.
- the first sensing electrode ES 1 corresponding to the (ji+1)-th pixel may be formed from a substantially same layer as pixel electrodes PE of the pixels.
- both the pixel electrodes PE and the first sensing electrodes ES 1 , as well as the second sensing electrodes ES 2 may be formed from the pixel electrode layer 212 .
- the first sensing electrode ES 1 corresponding to the (ji+1)-th pixel electrode PEji+1 is spaced apart from the (ji+1)-th pixel electrode PEji+1 by a predetermined distance to decrease an electrical coupling between the first sensing electrode ES 1 and the (ji+1)-th pixel electrode PEji+1.
- the (ji+1)-th pixel electrode PEji+1 adjacent to the first sensing electrode ES 1 may be recessed toward a center of a (ji+1)-th pixel region Paji+1 of the (ji+1)-th pixel electrode PEji+1.
- the display panel 200 may further include a spacer.
- the spacer is interposed between the array substrate 210 and the opposite substrate 220 so that the array substrate 210 is spaced apart from the opposite substrate 220 by a predetermined distance, and maintains the distance, such as for defining the cell gap.
- the spacer may be a column spacer 230 , as shown in FIGS. 5 and 6 .
- the column spacer 230 In order to form the column spacer 230 , a photoresist film including an organic material is coated on the opposite substrate 220 . The photoresist film is exposed and patterned through a photo process using a photo mask. In FIGS. 5 and 6 , the column spacer 230 is in the region corresponding to the black matrix so that the opening ratio of the pixels of the display panel 200 is not decreased.
- the display panel 200 may include a plurality of column spacers 230 , depending on a size of the display panel 200 .
- the column spacer 230 supports a remaining portion of the opposite substrate 220 so that the first and second protruded electrodes ER 1 and ER 2 (shown in FIG. 3 ) corresponding to the externally provided pressure PO are electrically connected to the first and second signal lines SL 1 and SL 2 corresponding to the externally provided pressure PO, respectively.
- the portion of the opposite substrate 220 recovers a substantially initial position by an elasticity of the opposite base substrate 220 a so that the first and second protruded electrodes ER 1 and ER 2 are again spaced apart from the first and second signal lines SL 1 and SL 2 , respectively, as shown in FIG. 5 .
- FIGS. 5 and 6 have been illustrated and described with respect to the first signal lines SL 1
- the second signal lines SL 2 are substantially the same as described in FIGS. 3 and 4 , and are, as described above, formed in the second direction D 2 and within a same layer as the data lines DL, the source electrodes S, and the drain electrodes D.
- the externally provided pressure PO applied to the second protruded electrode ER 2 would connect the second protruded electrode ER 2 to the second sensing electrode ES 2 , which is connected to the second signal line SL 2 , in a similar manner as the connection between the first protruded electrode ER 1 , the first sensing electrode ES 1 , and the first signal line SL 1 .
- any further explanations concerning the above elements will be omitted.
- FIG. 7 is a plan view illustrating a portion of an exemplary display panel according to another exemplary embodiment of the present invention.
- FIG. 8 is a cross-sectional view taken along line VIII-VIII′ in FIG. 7 .
- the display panel 600 includes an array substrate 610 , an opposite substrate 620 , and a liquid crystal layer (not shown) interposed between the array substrate 610 and the opposite substrate 620 .
- FIGS. 7 and 8 are substantially the same as in FIGS. 4 to 6 except first signal lines, second signal lines, sensing electrodes and protruded electrodes. Thus, further explanations concerning certain similar features of the array substrate and the opposite substrate as in FIGS. 4 and 6 may not be included in the description of FIGS. 7 and 8 .
- the array substrate 610 may further include a plurality of first signal lines SL 1 and a plurality of second signal lines SL 2 .
- the first signal lines SL 1 are extended in the first direction Dl, and are substantially parallel to the gate lines GLj ⁇ 1 and GLj.
- the second signal lines SL 2 are extended in the second direction D 2 , and are substantially parallel to the data lines DLi and DLi+1.
- the first signal lines SL 1 may be formed from a substantially same layer of the array substrate 610 as the gate lines GLj ⁇ 1 and GLj, and the second signal lines SL 2 may be formed from a substantially same layer of the array substrate 610 as the data lines DLi and DLi+1.
- An initial driving voltage Vid is applied to the first and second signal lines SL 1 and SL 2 .
- the array substrate 610 may further include a plurality of first sensing electrodes ES 1 formed on the first signal lines SL 1 .
- the first sensing electrodes ES 1 may be on an uppermost layer of the array substrate 610 , and formed within a same layer as the pixel electrodes PE.
- the first sensing electrodes ES 1 correspond to a plurality of first protruded electrodes, hereinafter referred to as protruded electrodes ERC, of the opposite substrate 620 .
- Each of the first sensing electrodes ES 1 is electrically connected to each of the protruded electrodes ERC based on an externally provided pressure PO.
- the array substrate 610 may further include a plurality of second sensing electrodes ES 2 formed on the second signal lines SL 2 .
- the second sensing electrodes ES 2 may be on the uppermost layer of the array substrate 610 , and formed within a same layer as the first sensing electrodes ES 1 and the pixel electrodes PE.
- the second sensing electrodes ES 2 correspond to a plurality of second protruded electrodes, hereinafter referred to as protruded electrodes ERC, of the opposite substrate 620 .
- Each of the second sensing electrodes ES 2 is electrically connected to each of the protruded electrodes ERC based on the externally provided pressure PO.
- the array substrate 610 includes a base substrate 611 , a TFT array layer (not shown), and a pixel electrode layer 615 .
- the first sensing electrodes ES 1 are electrically connected to the first signal lines SL 1 through contact holes through which the first signal lines SL 1 are partially exposed.
- the second sensing electrodes ES 2 are electrically connected to the second signal lines SL 2 through contact holes through which the second signal lines SL 2 are partially exposed.
- the contact holes for partially exposing the first signal lines SL 1 are formed through a gate insulating layer 612 , a passivation layer 613 , and a planarizing layer 614 of the TFT array layer, and the contact holes for partially exposing the second signal lines SL 2 are formed through a passivation layer 613 and a planarizing layer 614 of the TFT array layer.
- Each of the first sensing electrodes ES 1 is adjacent to each of the second sensing electrodes ES 2 .
- the adjacent first and second sensing electrodes ES 1 and ES 2 correspond to a unit pixel part that includes, for example, a red (R) pixel, a green (G) pixel and a blue (B) pixel.
- the first and second sensing electrodes ES 1 and ES 2 are in a region corresponding to a black matrix of the opposite substrate 620 .
- the opposite substrate 620 includes an opposite base substrate 621 , a protrusion 622 , and a common electrode layer 623 .
- the opposite substrate 620 may further include a plurality of protrusions 622 .
- a plurality of common protruded electrodes ERC is formed on the opposite base substrate 621 .
- Each of the protrusions 622 and a portion of a common electrode layer 623 on the protrusion 622 form each of the common protruded electrodes ERC.
- each of the common protruded electrodes ERC includes each of the protrusions 622 that are formed on the opposite base substrate 621 and the portion of the common electrode layer 623 covering the protrusion 622 , and corresponding to the adjacent first and second sensing electrodes ES 1 and ES 2 .
- the common electrode layer 623 covers the protrusions 622 .
- the opposite base substrate 621 corresponding to one of the protrusions 622 is bent toward the array substrate 610 so that the portion of the common electrode layer 623 on the protrusion 622 makes contact with the adjacent first and second sensing electrodes ES 1 and ES 2 . That is, the common protruded electrode ERC is electrically connected to the adjacent first and second sensing electrodes ES 1 and ES 2 in response to the externally provided pressure PO.
- the adjacent first and second sensing electrodes ES 1 and ES 2 are electrically connected to one of the first signal lines SL 1 and one of the second signal lines SL 2 , respectively, so that the common electrode layer 623 is electrically connected to both of the first and second signal lines SL 1 and SL 2 .
- the common protruded electrodes ERC are formed in the region of the opposite substrate 620 corresponding to the black matrix.
- the common protruded electrodes ERC, the first sensing electrodes ES 1 and the second sensing electrodes ES 2 are not overlapped with transmission regions of the pixels so that opening rate of the pixels is not decreased. In other words, an aperture rate of each of the pixels is not decreased due to a location of the common protruded electrode ERC.
- each of the first signal lines SL 1 extended in the first direction Dl includes a branch line BR that is branched from the first signal line SL 1 in the second direction D 2 , as shown in FIG. 7 .
- each of the first signal lines SL 1 may include a plurality of branch lines BR.
- the first sensing electrodes ES 1 may be connected to the first signal lines SL 1 at the branch lines BR.
- the common protruded electrodes ERC may be formed in the region corresponding to the black matrix of the opposite substrate 620 in an area corresponding to the branch lines BR of the array substrate 610 .
- each of the common protruded electrodes ERC may be formed between a unit pixel part having a (ji ⁇ 1)-th pixel Pji ⁇ 1, a ji-th pixel Pji, and a (ji+1)-th pixel Pji+1 and an adjacent unit pixel part, and the black matrix covers the common protruded electrode ERC.
- Each unit pixel parts includes, for example, the red (R) pixel, the green (G) pixel, and the blue (B) pixel that display red, green, and blue colors, respectively.
- Each of the first sensing electrodes ES 1 is adjacent to each of the second sensing electrodes ES 2 so that each of the common protruded electrodes ERC may be electrically connected to both of the adjacent first and second sensing electrodes ES 1 and ES 2 when each of the common protruded electrodes ERC is applied with an externally provided pressure PO.
- a width of the black matrix corresponding to a location between the unit pixel part having the (ji ⁇ 1)-th pixel Pji ⁇ 1, the ji-th pixel Pji and the (ji+1)-th pixel Pji+1 and the adjacent unit pixel part may be adjusted to cover the common protruded electrode ERC between the unit pixel part having the (ji ⁇ 1)-th pixel Pji ⁇ 1, the ji-th pixel Pji and the (ji+1)-th pixel Pji+1 and the adjacent unit pixel part.
- the first and second sensing electrodes ES 1 and ES 2 may be formed from a substantially same layer as the pixel electrodes PEji and PEji+1 of the pixels.
- the first and second sensing electrodes ES 1 and ES 2 are spaced apart from the (ji+1)-th pixel electrode PEji+1 of the (ji+1)-th pixel by a predetermined distance to decrease an electrical coupling between the (ji+1)-th pixel electrode PEji+1 and the first and second sensing electrodes ES 1 and ES 2 .
- the (ji+1)-th pixel electrode PEji+1 adjacent to the first and second sensing electrodes ES 1 and ES 2 may be recessed toward a center of a (ji+1)-th pixel region Paji+1 of the (ji+1)-th pixel electrode PEji+1, as shown in FIG. 7 .
- the (ji+1)-th pixel electrode PEji+1 adjacent to the first and second sensing electrodes ES 1 and ES 2 may be indented at a location corresponding to the first and second sensing electrodes ES 1 and ES 2 .
- the first and second signal lines SL 1 and SL 2 are adjacent to each other, such as near where the branch line BR runs adjacent to the second signal line SL 2 , and each of the common protruded electrodes ERC makes contact with the adjacent first and second sensing electrodes ES 1 and ES 2 upon application of an externally provided pressure PO.
- a voltage level of one of the second signal lines SL 2 for determining x-coordinates of the externally provided pressure PO may be simultaneously changed as a voltage level of one of the first signal lines SL 1 for determining y-coordinates of the externally provided pressure PO, thereby detecting a precise position of the externally provided pressure PO.
- the first signal line SL 1 for determining y-coordinates when spaced apart from a second signal line SL 2 for determining x-coordinates, the first signal line SL 1 may not be electrically connected to a first protruded electrode ER 1 although the second signal line SL 2 is electrically connected to a second protruded electrode ER 2 . Also, when the first signal line SL 1 for determining y-coordinates is spaced apart from the second signal line SL 2 for determining x-coordinates, the second signal line SL 2 may not be electrically connected to the second protruded electrode ER 2 although the first signal line SL 1 is electrically connected to the first protruded electrode ER 1 . However, in FIGS.
- each of the first sensing electrodes ES 1 corresponding to each of the common protruded electrodes ERC is adjacent to each of the second sensing electrodes ES 2 also corresponding to the common protruded electrode ERC so that the adjacent first and second signal lines SL 1 and SL 2 may be simultaneously electrically connected to the common protruded electrode ERC upon application of the externally provided pressure PO.
- FIG. 9 is a cross-sectional view illustrating an exemplary display panel according to another exemplary embodiment of the present invention.
- the display panel 700 includes first and second signal lines SL 1 and SL 2 formed on an array substrate 710 , first and second protruded electrodes ER 1 and ER 2 formed on an opposite substrate 720 , and a spacer that maintains a distance between the array substrate 710 and the opposite substrate 720 .
- the opposite substrate 720 includes an opposite base substrate 721 and a common electrode layer 722 formed on substantially an entire surface of the opposite substrate 720 including the first and second protruded electrodes ER 1 and ER 2 .
- the display panel 700 of FIG. 9 is substantially the same as in FIGS. 4 to 6 , with the exception of the spacer. Thus, any further explanations concerning elements similar to those in FIGS. 4 and 6 will be omitted in the description of FIG. 9 .
- the spacer includes a ball spacer 730 .
- the ball spacer 730 may maintain a cell gap between the opposite substrate 720 and the array substrate 710 .
- the ball spacer 730 may have a substantially spherical shape so that the ball spacer 730 may have a greater elasticity than the column spacer 230 (shown in FIGS. 4 to 6 ).
- FIG. 10 is a cross-sectional view illustrating an exemplary display panel according to another exemplary embodiment of the present invention.
- the display panel 800 includes first and second signal lines SL 1 and SL 2 formed on an array substrate 810 , first and second protruded electrodes ER 1 and ER 2 formed on an opposite substrate 820 , and a spacer 830 that maintains a distance between the array substrate 810 and the opposite substrate 820 .
- the display panel of FIG. 10 is substantially the same as in FIGS. 4 to 6 , with the exception of the first and second protruded electrodes ER 1 and ER 2 . Thus, any further explanations concerning elements similar to those in FIGS. 4 and 6 will be omitted in the description of FIG. 10 .
- the opposite substrate 820 includes an opposite base substrate 821 , a common electrode layer 822 , and first and second protruded electrodes ER 1 and ER 2 .
- the common electrode layer 822 is formed on the opposite base substrate 821 to cover a substantially entire surface of the opposite base substrate 821 .
- the first and second protruded electrodes ER 1 and ER 2 may include a conductive material. An end portion of each of the first and second protruded electrodes ER 1 and ER 2 makes contact with the common electrode layer 822 .
- the first and second protruded electrodes ER 1 and ER 2 correspond to first and second sensing electrodes that are connected to the first and second signal lines SL 1 and SL 2 , respectively.
- the spacer and the protruded electrodes of the respective display panels include different materials, shapes, or positionings from the spacer and the protruded electrodes of the display panel shown in FIGS. 4 to 6 .
- the display panel of the present invention may include various spacers and protruded electrodes, including varying combinations of spacers and protruded electrodes described herein.
- the display panel may include a ball spacer and protruded electrodes including a conductive material.
- the display panel may include the spacers and the protruded electrodes shown in FIGS. 9 and 10 and other elements substantially the same as shown in FIGS. 4 to 6 .
- the display panel may include the spacers and the protruded electrodes shown in FIGS. 9 and 10 and other elements substantially the same as shown in FIGS. 7 and 8 .
- FIG. 11 is a flow chart showing an exemplary method of detecting touch position according to another exemplary embodiment of the present invention.
- FIG. 12 is a block diagram illustrating an exemplary method of detecting touch position on a portion of an exemplary display device according to another exemplary embodiment of the present invention.
- the display device includes the display panel shown in FIG. 3 .
- similar methods of detecting touch position may be performed using other display panels including varying embodiments as described above.
- the display panel 200 includes an array substrate 210 and an opposite substrate 220 .
- the array substrate 210 includes a plurality of first signal lines SL 1 extended in a first direction D 1 and a plurality of second signal lines SL 2 extended in a second direction D 2 that crosses the first direction D 1 .
- the opposite substrate 220 faces the array substrate 210 so that a liquid crystal layer is interposed between the array substrate 210 and the opposite substrate 220 .
- the opposite substrate 220 includes a plurality of first protruded electrodes ER 1 and a plurality of second protruded electrodes ER 2 .
- the first and second protruded electrodes ER 1 and ER 2 are protruded from the opposite substrate 220 toward the array substrate 210 .
- the first and second signal lines SL 1 and SL 2 are electrically connected to a touch position detecting part 400 (shown in FIG. 1 ).
- the touch position detecting part 400 applies an initial driving voltage Vid having a predetermined level to the first and second signal lines SL 1 and SL 2 .
- a voltage controlling part 410 applies the initial driving voltage Vid outputted from the power supply part 320 to the first and second signal lines SL 1 and SL 2 based on the fifth control signal CNTL 5 outputted from the timing controlling part 310 .
- the common voltage Vcom is applied to a common electrode layer 220 c of the opposite substrate 220 to change arrangement of liquid crystals of the liquid crystal layer.
- the display panel 200 may include an input member that may be pressed on the display panel 200 .
- an externally provided pressure PO is applied to a portion of the opposite substrate 220 , the portion of the opposite substrate 220 is bent toward the array substrate 210 so that at least one of the first and second protruded electrodes ER 1 p+q and ER 2 p+q corresponding to the externally provided pressure PO are electrically connected to at least one corresponding first and second signal line SL 1 and SL 2 that may be adjacent to each other.
- the first and second protruded electrodes ER 1 p+q and ER 2 p+q are electrically connected to the common electrode layer 220 c that receives the common voltage Vcom.
- a data sampling part 420 of the touch position detecting part 400 when the level of the initial driving voltage Vid applied to the first signal line SL 1 is changed due to the externally provided pressure PO, a data sampling part 420 of the touch position detecting part 400 generates a first detection signal DS 1 using the changed level of the initial driving voltage Vid.
- the first detection signal DS 1 corresponds to y-coordinates of a position of the externally provided pressure PO.
- the data sampling part 420 of the touch position detecting part 400 when the level of the initial driving voltage Vid applied to the second signal line SL 2 is changed, the data sampling part 420 of the touch position detecting part 400 generates a second detection signal DS 2 using the changed level of the initial driving voltage Vid.
- the level of the initial driving voltage Vid applied to the second signal line may be simultaneously changed with the first signal line SL 1 .
- the second detection signal DS 2 corresponds to x-coordinates of the position of the externally provided pressure PO.
- the first and second detection signals DS 1 and DS 2 are applied to a position determining part 500 (shown in FIG. 1 ).
- the position determining part 500 processes the y-coordinates and the x-coordinates of the externally provided pressure PO to determine the position of the externally provided pressure PO on the display panel 200 , thereby applying data of the y-coordinates and the x-coordinates to a host system for displaying image.
- the data of the y-coordinates and the x-coordinates of the input member and instruction assembly are stored in the host system.
- the host system performs an instruction corresponding to the data of the y-coordinates and the x-coordinates based on the first and second detection signals DS 1 and DS 2 that are generated using the externally provided pressure PO, and a result of the instruction is displayed on the display panel 200 .
- the position determining part 500 may be integrated into the host system. Alternatively, the host system may perform the touch position determining function of the position determining part 500 .
- the touch position detecting part 400 may have a structure described hereafter.
- FIG. 13 is a timing diagram illustrating the exemplary method of detecting the touch position in FIG. 11 .
- FIG. 14 is a schematic circuit view illustrating an exemplary touch position detecting part according to the exemplary method shown in FIG. 13 .
- a common voltage Vcom is applied to a common electrode layer 220 c (a period before SY 1 ).
- a voltage controlling part 410 is driven based on a fifth control signal CNTL 5 outputted from a timing controlling part 310 (shown in FIG. 1 ), and applies an initial driving voltage Vid to first and second signal lines SL 1 and SL 2 (during a period between SY 1 and SY 2 ).
- a first protruded electrode ER 1 p+q of a plurality of first protruded electrodes ER 1 and a second protruded electrode ER 2 p+q of a plurality of second protruded electrodes ER 2 , adjacent to the first protruded electrode ER 1 p+q , are electrically connected to the first and second signal lines SL 1 and SL 2 , respectively, based on an externally provided pressure PO so that voltage levels of the first and second signal lines SL 1 and SL 2 electrically connected to the adjacent first and second protruded electrodes ER 1 p+q and ER 2 p+q are changed (during a period between SY 2 and SY 3 ).
- the common voltage Vcom When the common voltage Vcom has a lower level than the initial driving voltage Vid, a current flows through each of the first and second signal lines SL 1 and SL 2 to the common electrode layer 220 c so that the level of each of the first and second signal lines SL 1 and SL 2 becomes the level of the common voltage Vcom (during a period between SY 3 and SY 4 ).
- the common voltage Vcom may be about 0V
- the initial driving voltage Vid may be about 5V.
- a data sampling part 420 latches the changed level of each of the first and second signal lines SL 1 and SL 2 based on a sampling signal SS that is outputted from the timing controlling part 310 , such as during the time period between SY 3 and SY 4 , and generates first and second detection signals DS 1 and DS 2 .
- the data sampling part 420 may further include a latch that receives the sampling signal SS.
- the voltage controlling part 410 may include a switching element such as a metal oxide semiconductor (“MOS”) transistor and may be electrically connected to the first and second signal lines SL 1 and SL 2 .
- MOS metal oxide semiconductor
- FIG. 15 is a schematic circuit view illustrating another exemplary touch position detecting part according to the exemplary method shown in FIG. 11 .
- the common voltage Vcom has a lower level than the initial driving voltage Vid.
- a common voltage Vcom has a relatively higher level than an initial driving voltage Vid.
- the common voltage Vcom and the initial driving voltage Vid may be about 5V and about 0V, respectively
- a current flows through the common electrode layer 220 c to each of the first and second signal lines SL 1 and SL 2 so that the level of each of the first and second signal lines SL 1 and SL 2 becomes the level of the common voltage Vcom.
- an application of a fifth control signal CNTL 5 that controls the voltage controlling part 410 may be omitted. That is, a timing controlling part 310 (shown in FIG. 1 ) does not need to apply the fifth control signal CNTL 5 to the voltage controlling part 410 , since the initial driving voltage Vid may be 0V.
- a data sampling part 420 compares a predetermined reference signal Vref, e.g. 3V, with the changed level of each of the first and second signal lines SL 1 and SL 2 to amplify a voltage difference between the reference signal Vref and the changed level of each of the first and second signal lines SL 1 and SL 2 , and generates first and second detection signals DS 1 and DS 2 .
- the reference signal Vref may be adjusted to increase sensitivity for detecting the variation of the level of each of the first and second signal lines SL 1 and SL 2 .
- the initial driving voltage Vid that is substantially the same as a ground potential GND may be applied to the first and second signal lines SL 1 and SL 2 to detect the variation of the voltage applied to the first and second signal lines SL 1 and SL 2 .
- the data sampling part 420 may include an operational amplifier, and a power supply part 320 (shown in FIG. 1 ) may generate the reference signal Vref.
- the protruded electrodes of the opposite substrate are electrically connected to the signal lines of the array substrate based on the externally provided pressure to detect the variation of the common voltage and the initial driving voltage that are applied to the protruded electrodes and the signal lines, respectively.
- the coordinates of the touch position, to which the externally provided pressure is applied is detected.
- the display panel includes the touch screen function so that a thickness of the display panel is decreased.
- the touch position is determined based on the variation of the initial driving voltage applied to the first and second signal lines, and thus the display panel advantageously does not require a light sensor dependent on ambient light, so that the touch position is easily detected.
Abstract
Description
Claims (28)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050089212A KR101226440B1 (en) | 2005-09-26 | 2005-09-26 | Display panel and display device having the same and method of detecting touch position of the display device |
KR2005-89212 | 2005-09-26 | ||
KR10-2005-0089212 | 2005-09-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20070070047A1 US20070070047A1 (en) | 2007-03-29 |
US8199116B2 true US8199116B2 (en) | 2012-06-12 |
Family
ID=37893256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/518,707 Expired - Fee Related US8199116B2 (en) | 2005-09-26 | 2006-09-11 | Display panel, display device having the same and method of detecting touch position |
Country Status (3)
Country | Link |
---|---|
US (1) | US8199116B2 (en) |
JP (1) | JP4914149B2 (en) |
KR (1) | KR101226440B1 (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100265205A1 (en) * | 2009-04-20 | 2010-10-21 | Samsung Electronics Co., Ltd. | Method of detecting touch positions and touch position detection apparatus for performing the method |
US8587422B2 (en) | 2010-03-31 | 2013-11-19 | Tk Holdings, Inc. | Occupant sensing system |
US8725230B2 (en) | 2010-04-02 | 2014-05-13 | Tk Holdings Inc. | Steering wheel with hand sensors |
US9007190B2 (en) | 2010-03-31 | 2015-04-14 | Tk Holdings Inc. | Steering wheel sensors |
US9032818B2 (en) | 2012-07-05 | 2015-05-19 | Nextinput, Inc. | Microelectromechanical load sensor and methods of manufacturing the same |
US9417754B2 (en) | 2011-08-05 | 2016-08-16 | P4tents1, LLC | User interface system, method, and computer program product |
US9487388B2 (en) | 2012-06-21 | 2016-11-08 | Nextinput, Inc. | Ruggedized MEMS force die |
US9696223B2 (en) | 2012-09-17 | 2017-07-04 | Tk Holdings Inc. | Single layer force sensor |
US9727031B2 (en) | 2012-04-13 | 2017-08-08 | Tk Holdings Inc. | Pressure sensor including a pressure sensitive material for use with control systems and methods of using the same |
US20170315657A1 (en) * | 2016-04-28 | 2017-11-02 | Au Optronics Corp. | Dual-mode capacitive touch display panel |
US9902611B2 (en) | 2014-01-13 | 2018-02-27 | Nextinput, Inc. | Miniaturized and ruggedized wafer level MEMs force sensors |
US20190310143A1 (en) * | 2018-04-05 | 2019-10-10 | Samsung Display Co., Ltd. | Force sensor |
US10466119B2 (en) | 2015-06-10 | 2019-11-05 | Nextinput, Inc. | Ruggedized wafer level MEMS force sensor with a tolerance trench |
US10962427B2 (en) | 2019-01-10 | 2021-03-30 | Nextinput, Inc. | Slotted MEMS force sensor |
US11221263B2 (en) | 2017-07-19 | 2022-01-11 | Nextinput, Inc. | Microelectromechanical force sensor having a strain transfer layer arranged on the sensor die |
US11243126B2 (en) | 2017-07-27 | 2022-02-08 | Nextinput, Inc. | Wafer bonded piezoresistive and piezoelectric force sensor and related methods of manufacture |
US11243125B2 (en) | 2017-02-09 | 2022-02-08 | Nextinput, Inc. | Integrated piezoresistive and piezoelectric fusion force sensor |
US11255737B2 (en) | 2017-02-09 | 2022-02-22 | Nextinput, Inc. | Integrated digital force sensors and related methods of manufacture |
US11385108B2 (en) | 2017-11-02 | 2022-07-12 | Nextinput, Inc. | Sealed force sensor with etch stop layer |
US11423686B2 (en) | 2017-07-25 | 2022-08-23 | Qorvo Us, Inc. | Integrated fingerprint and force sensor |
US11579028B2 (en) | 2017-10-17 | 2023-02-14 | Nextinput, Inc. | Temperature coefficient of offset compensation for force sensor and strain gauge |
US11874185B2 (en) | 2017-11-16 | 2024-01-16 | Nextinput, Inc. | Force attenuator for force sensor |
Families Citing this family (82)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101205539B1 (en) * | 2006-02-20 | 2012-11-27 | 삼성디스플레이 주식회사 | Liquid crystal display panel and liquid crystal display panel having the same |
KR101330214B1 (en) * | 2006-07-18 | 2013-11-18 | 삼성디스플레이 주식회사 | Touch screen display apparatus and method of driving the same |
KR101349096B1 (en) * | 2006-12-27 | 2014-01-09 | 삼성디스플레이 주식회사 | Display device |
US20080165139A1 (en) * | 2007-01-05 | 2008-07-10 | Apple Inc. | Touch screen stack-up processing |
KR101420143B1 (en) * | 2007-02-02 | 2014-07-17 | 삼성디스플레이 주식회사 | Display panel and display apparatus having the same |
KR101385190B1 (en) * | 2007-02-07 | 2014-04-15 | 삼성디스플레이 주식회사 | Liquid crystal display and manufacturing method of the same |
US9507466B2 (en) * | 2007-05-08 | 2016-11-29 | Cirque Corporation | Intrusion detection using a capacitance sensitive touchpad |
JP5282372B2 (en) * | 2007-05-11 | 2013-09-04 | ソニー株式会社 | Display device and electronic device |
KR101386958B1 (en) * | 2007-08-21 | 2014-04-18 | 삼성디스플레이 주식회사 | Method for discerning touch points and touch panel for carrying out the method |
KR20090026576A (en) * | 2007-09-10 | 2009-03-13 | 삼성전자주식회사 | Display and method of manufacturing the same |
KR101365012B1 (en) * | 2007-10-08 | 2014-02-19 | 삼성디스플레이 주식회사 | Thin film transistor substrate, display device having the same and method of manufacturing the same |
KR100879478B1 (en) * | 2007-10-16 | 2009-01-23 | 주식회사 티엘아이 | Touch screen lcd with improving touching point detection and driving method therefor |
KR20090075369A (en) * | 2008-01-04 | 2009-07-08 | 삼성전자주식회사 | Display panel |
US8134652B2 (en) * | 2008-01-16 | 2012-03-13 | Samsung Electronics Co., Ltd. | Liquid crystal display having sensor and spacer arrangement and and method of manufacturing the same |
TWI541568B (en) * | 2008-02-29 | 2016-07-11 | Lg電子股份有限公司 | Portable terminal |
TWI379228B (en) * | 2008-04-18 | 2012-12-11 | Au Optronics Corp | Resistance type touch display panel |
KR101322015B1 (en) * | 2008-06-24 | 2013-10-25 | 엘지디스플레이 주식회사 | Liquid Crystal Display Device |
KR101481666B1 (en) | 2008-07-08 | 2015-01-13 | 엘지디스플레이 주식회사 | Liquid Crystal Display Device and Method for Driving the Same |
JP4720868B2 (en) | 2008-07-31 | 2011-07-13 | カシオ計算機株式会社 | Touch panel |
KR20100015225A (en) * | 2008-08-04 | 2010-02-12 | 삼성전자주식회사 | Liquid crystal display apparatus and touch sensing method thereof |
JP4683090B2 (en) | 2008-08-06 | 2011-05-11 | ソニー株式会社 | Liquid crystal display device and manufacturing method thereof |
KR101500426B1 (en) * | 2008-08-26 | 2015-03-09 | 삼성디스플레이 주식회사 | Touch screen display apparatus |
JP5056702B2 (en) * | 2008-09-29 | 2012-10-24 | カシオ計算機株式会社 | Liquid crystal display element and liquid crystal display device |
DE102009046177A1 (en) * | 2008-10-30 | 2010-06-10 | Samsung Electronics Co., Ltd., Suwon | Touch data generator |
KR100951380B1 (en) * | 2008-11-07 | 2010-04-08 | 이성호 | Touch panel |
KR101073285B1 (en) * | 2008-12-01 | 2011-10-12 | 삼성모바일디스플레이주식회사 | Touch Screen Panel |
JP2010139555A (en) | 2008-12-09 | 2010-06-24 | Sony Corp | Liquid crystal panel and liquid crystal display device |
KR100935403B1 (en) * | 2008-12-10 | 2010-01-06 | 이성호 | Touch panel |
JP5588617B2 (en) * | 2009-01-23 | 2014-09-10 | 株式会社ジャパンディスプレイ | Display device, display device driving method, and electronic apparatus |
JP4930520B2 (en) * | 2009-01-26 | 2012-05-16 | ソニー株式会社 | Display device |
JP4893759B2 (en) | 2009-01-27 | 2012-03-07 | ソニー株式会社 | Liquid crystal display |
JP4905541B2 (en) | 2009-02-04 | 2012-03-28 | ソニー株式会社 | Liquid crystal display device and method for manufacturing liquid crystal display device |
JP4730443B2 (en) * | 2009-02-04 | 2011-07-20 | ソニー株式会社 | Display device |
JP4816738B2 (en) * | 2009-02-05 | 2011-11-16 | ソニー株式会社 | Information input / output device |
TWI397004B (en) * | 2009-02-06 | 2013-05-21 | Acer Inc | Liquid crystal display panel integrating keys and method of integrating keys into a liquid crystal display panel |
WO2010095293A1 (en) * | 2009-02-18 | 2010-08-26 | シャープ株式会社 | Touch panel provided with built-in display device |
CN101825787B (en) | 2009-03-04 | 2013-06-12 | 北京京东方光电科技有限公司 | Touch display screen and manufacture method thereof |
US20120013593A1 (en) * | 2009-03-17 | 2012-01-19 | Sharp Kabushiki Kaisha | Display device |
KR101558915B1 (en) * | 2009-03-27 | 2015-10-13 | 삼성디스플레이 주식회사 | A touch screen module with a protector window |
JP5443812B2 (en) * | 2009-04-01 | 2014-03-19 | 日本放送協会 | Non-contact drive type display device |
KR101551447B1 (en) * | 2009-04-27 | 2015-09-09 | 삼성디스플레이 주식회사 | Display panel display apparatus having the same and method of driving the display apparatus |
JP4900421B2 (en) | 2009-05-29 | 2012-03-21 | カシオ計算機株式会社 | Liquid crystal display panel and liquid crystal display device |
TWI489331B (en) * | 2009-06-11 | 2015-06-21 | Au Optronics Corp | Touch point coordinate detection method |
JP4811502B2 (en) | 2009-07-01 | 2011-11-09 | カシオ計算機株式会社 | Liquid crystal display panel and touch panel |
TWI421741B (en) * | 2009-07-01 | 2014-01-01 | Au Optronics Corp | Touch panel and sensing method thereof |
CN101943961B (en) * | 2009-07-08 | 2014-08-20 | 新励科技(深圳)有限公司 | Drive realization of of touch control flat-panel display |
KR100936369B1 (en) * | 2009-07-13 | 2010-01-12 | 이성호 | Display device having built-in touch input means |
KR100935340B1 (en) * | 2009-07-13 | 2010-01-06 | 이성호 | Display device having built-in touch input means |
KR101607635B1 (en) * | 2009-09-21 | 2016-03-31 | 삼성디스플레이 주식회사 | Display panel and liquid crystal display including the same |
KR101144725B1 (en) * | 2009-11-30 | 2012-05-24 | 이성호 | Touch cell structure of touch panel |
KR101144723B1 (en) * | 2009-12-02 | 2012-05-24 | 이성호 | Touch input device |
TWI410702B (en) * | 2010-02-10 | 2013-10-01 | Au Optronics Corp | Touch display panel |
KR101054881B1 (en) * | 2010-02-17 | 2011-08-05 | 영남대학교 산학협력단 | Bidirectional display device and method of detecting touch point |
JP5382658B2 (en) * | 2010-02-26 | 2014-01-08 | 株式会社ジャパンディスプレイ | Display device with touch sensor, touch panel, touch panel driving method, and electronic device |
KR101761861B1 (en) * | 2010-06-18 | 2017-07-27 | 삼성디스플레이 주식회사 | Touch sensible display device |
JP5500013B2 (en) | 2010-09-08 | 2014-05-21 | カシオ計算機株式会社 | Touch-type liquid crystal display device with built-in contacts |
KR101790977B1 (en) * | 2010-10-08 | 2017-10-26 | 엘지디스플레이 주식회사 | Liquid crystal display device |
KR101891985B1 (en) * | 2010-10-08 | 2018-08-27 | 엘지디스플레이 주식회사 | Liquid crystal display device |
KR101764415B1 (en) * | 2010-10-29 | 2017-08-16 | 삼성디스플레이 주식회사 | Flat Panel Display with Built-in Touch Panel |
JP5229312B2 (en) * | 2010-12-24 | 2013-07-03 | カシオ計算機株式会社 | Liquid crystal display |
JP5691501B2 (en) * | 2010-12-24 | 2015-04-01 | カシオ計算機株式会社 | Touch panel, liquid crystal display element having the same, and touch panel position detection method |
JP5730240B2 (en) * | 2011-04-25 | 2015-06-03 | 信越ポリマー株式会社 | Capacitance sensor sheet manufacturing method and capacitance sensor sheet |
US9244577B2 (en) * | 2011-09-30 | 2016-01-26 | Intel Corporation | Mechanism for employing and facilitating placement of a sensor cover over a capacitive circuitry sensor at a computing device |
KR101374312B1 (en) * | 2011-10-21 | 2014-03-14 | 주식회사 지2터치 | Capacitive type touch detecting means, method and touch screen panel using voltage changing phenomenon, and display device embedding said the capacitive type touch screen panel |
KR101374311B1 (en) * | 2011-10-21 | 2014-03-14 | 주식회사 지2터치 | Capacitive type touch detecting means, method and touch screen panel using voltage changing phenomenon, and display device embedding said the capacitive type touch screen panel |
KR101399009B1 (en) * | 2011-10-21 | 2014-05-27 | 주식회사 지2터치 | Capacitive type touch detecting means, method and touch screen panel using voltage changing phenomenon, and display device embedding said the capacitive type touch screen panel |
JP2013195910A (en) * | 2012-03-22 | 2013-09-30 | Japan Display West Co Ltd | Image forming apparatus and electronic instrument |
KR101472080B1 (en) * | 2012-12-27 | 2014-12-17 | (주)멜파스 | Touch sensing apparatus and method |
WO2014145770A2 (en) | 2013-03-15 | 2014-09-18 | Cirque Corporation | Flying sense electrodes for creating a secure cage for integrated circuits and pathways |
CN103218076B (en) * | 2013-03-29 | 2017-02-08 | 合肥京东方光电科技有限公司 | Embedded type touch screen and display device |
US9619675B2 (en) * | 2013-04-08 | 2017-04-11 | Cirque Corporation | Capacitive sensor integrated in an integrated circuit package |
CN103970353B (en) | 2014-04-29 | 2016-10-05 | 京东方科技集团股份有限公司 | A kind of touch-control display panel and touch control display apparatus |
CN104020904B (en) * | 2014-05-28 | 2015-04-01 | 京东方科技集团股份有限公司 | Capacitive type embedded touch screen and display device |
CN104393025B (en) * | 2014-12-09 | 2017-08-11 | 京东方科技集团股份有限公司 | A kind of array base palte, touch-control display panel and touch control display apparatus |
CN104516590A (en) * | 2015-01-05 | 2015-04-15 | 京东方科技集团股份有限公司 | Touch display device and manufacture method thereof |
CN104793827B (en) * | 2015-05-08 | 2018-03-27 | 厦门天马微电子有限公司 | A kind of array base palte and self-capacitance touch control display apparatus |
CN105607780B (en) * | 2016-03-14 | 2019-02-26 | 京东方科技集团股份有限公司 | Electrostatic discharge circuit, display panel and electrostatic charging method with electrostatic discharge circuit |
TWI581157B (en) * | 2016-04-20 | 2017-05-01 | 群創光電股份有限公司 | Touch display device |
KR102099393B1 (en) * | 2016-04-26 | 2020-04-09 | 주식회사 나노브릭 | Reflective display device |
US10551969B2 (en) * | 2016-09-27 | 2020-02-04 | Samsung Display Co., Ltd. | Display device |
WO2018168682A1 (en) * | 2017-03-17 | 2018-09-20 | シャープ株式会社 | Display device with position input function |
KR20210090337A (en) | 2020-01-09 | 2021-07-20 | 삼성디스플레이 주식회사 | Display device |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0980467A (en) | 1995-09-14 | 1997-03-28 | Toshiba Corp | Active matrix type liquid crystal display device having function detecting pen inputting location |
JP2002287660A (en) | 2001-03-28 | 2002-10-04 | Seiko Epson Corp | Display device with input function and electronic equipment |
KR20030055990A (en) | 2001-12-27 | 2003-07-04 | 엘지.필립스 엘시디 주식회사 | Display device associated with touch panel |
US20040041796A1 (en) * | 2002-08-30 | 2004-03-04 | Lg.Philips Lcd Co., Ltd. | Touch panel device and method of fabricating the same |
US20040056845A1 (en) * | 2002-07-19 | 2004-03-25 | Alton Harkcom | Touch and proximity sensor control systems and methods with improved signal and noise differentiation |
US20040150629A1 (en) * | 2002-07-18 | 2004-08-05 | Lee Yu-Tuan | LCD and touch-control method thereof |
US20040189587A1 (en) * | 2003-03-28 | 2004-09-30 | Jung Yong Chae | Liquid crystal display device having electromagnetic type touch panel |
US20040196269A1 (en) * | 2000-09-29 | 2004-10-07 | Dotson Gary Dan | Low power dissipation touch plane interface circuit |
KR20050087414A (en) | 2004-02-26 | 2005-08-31 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display device and method for manufacturing the same |
US20050206624A1 (en) * | 2004-03-19 | 2005-09-22 | Tsung-Ying Li | Position touch screen panel and method of arranging a resistive sensing circuit thereof |
US20060077186A1 (en) * | 2004-09-24 | 2006-04-13 | Samsung Electronics Co., Ltd. | Touch detectable display device and driving method thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08286812A (en) * | 1995-04-14 | 1996-11-01 | Catalysts & Chem Ind Co Ltd | Transparent pointing tablet |
JP2002041231A (en) | 2000-05-17 | 2002-02-08 | Hitachi Ltd | Display unit of screen entry type |
-
2005
- 2005-09-26 KR KR1020050089212A patent/KR101226440B1/en not_active IP Right Cessation
-
2006
- 2006-08-28 JP JP2006230842A patent/JP4914149B2/en not_active Expired - Fee Related
- 2006-09-11 US US11/518,707 patent/US8199116B2/en not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0980467A (en) | 1995-09-14 | 1997-03-28 | Toshiba Corp | Active matrix type liquid crystal display device having function detecting pen inputting location |
US20040196269A1 (en) * | 2000-09-29 | 2004-10-07 | Dotson Gary Dan | Low power dissipation touch plane interface circuit |
JP2002287660A (en) | 2001-03-28 | 2002-10-04 | Seiko Epson Corp | Display device with input function and electronic equipment |
KR20030055990A (en) | 2001-12-27 | 2003-07-04 | 엘지.필립스 엘시디 주식회사 | Display device associated with touch panel |
US20040150629A1 (en) * | 2002-07-18 | 2004-08-05 | Lee Yu-Tuan | LCD and touch-control method thereof |
US20040056845A1 (en) * | 2002-07-19 | 2004-03-25 | Alton Harkcom | Touch and proximity sensor control systems and methods with improved signal and noise differentiation |
US20040041796A1 (en) * | 2002-08-30 | 2004-03-04 | Lg.Philips Lcd Co., Ltd. | Touch panel device and method of fabricating the same |
US20040189587A1 (en) * | 2003-03-28 | 2004-09-30 | Jung Yong Chae | Liquid crystal display device having electromagnetic type touch panel |
KR20050087414A (en) | 2004-02-26 | 2005-08-31 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display device and method for manufacturing the same |
US20050206624A1 (en) * | 2004-03-19 | 2005-09-22 | Tsung-Ying Li | Position touch screen panel and method of arranging a resistive sensing circuit thereof |
US20060077186A1 (en) * | 2004-09-24 | 2006-04-13 | Samsung Electronics Co., Ltd. | Touch detectable display device and driving method thereof |
Cited By (92)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100265205A1 (en) * | 2009-04-20 | 2010-10-21 | Samsung Electronics Co., Ltd. | Method of detecting touch positions and touch position detection apparatus for performing the method |
US8902189B2 (en) * | 2009-04-20 | 2014-12-02 | Samsung Display Co., Ltd. | Method of detecting touch positions and touch position detection apparatus for performing the method |
US8587422B2 (en) | 2010-03-31 | 2013-11-19 | Tk Holdings, Inc. | Occupant sensing system |
US9007190B2 (en) | 2010-03-31 | 2015-04-14 | Tk Holdings Inc. | Steering wheel sensors |
US8725230B2 (en) | 2010-04-02 | 2014-05-13 | Tk Holdings Inc. | Steering wheel with hand sensors |
US10606396B1 (en) | 2011-08-05 | 2020-03-31 | P4tents1, LLC | Gesture-equipped touch screen methods for duration-based functions |
US10338736B1 (en) | 2011-08-05 | 2019-07-02 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US11740727B1 (en) | 2011-08-05 | 2023-08-29 | P4Tents1 Llc | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US11061503B1 (en) | 2011-08-05 | 2021-07-13 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10996787B1 (en) | 2011-08-05 | 2021-05-04 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10936114B1 (en) | 2011-08-05 | 2021-03-02 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10838542B1 (en) | 2011-08-05 | 2020-11-17 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10013094B1 (en) | 2011-08-05 | 2018-07-03 | P4tents1, LLC | System, method, and computer program product for a multi-pressure selection touch screen |
US10031607B1 (en) | 2011-08-05 | 2018-07-24 | P4tents1, LLC | System, method, and computer program product for a multi-pressure selection touch screen |
US10120480B1 (en) | 2011-08-05 | 2018-11-06 | P4tents1, LLC | Application-specific pressure-sensitive touch screen system, method, and computer program product |
US10133397B1 (en) | 2011-08-05 | 2018-11-20 | P4tents1, LLC | Tri-state gesture-equipped touch screen system, method, and computer program product |
US10146353B1 (en) | 2011-08-05 | 2018-12-04 | P4tents1, LLC | Touch screen system, method, and computer program product |
US10156921B1 (en) | 2011-08-05 | 2018-12-18 | P4tents1, LLC | Tri-state gesture-equipped touch screen system, method, and computer program product |
US10162448B1 (en) | 2011-08-05 | 2018-12-25 | P4tents1, LLC | System, method, and computer program product for a pressure-sensitive touch screen for messages |
US10203794B1 (en) | 2011-08-05 | 2019-02-12 | P4tents1, LLC | Pressure-sensitive home interface system, method, and computer program product |
US10209808B1 (en) | 2011-08-05 | 2019-02-19 | P4tents1, LLC | Pressure-based interface system, method, and computer program product with virtual display layers |
US10209807B1 (en) | 2011-08-05 | 2019-02-19 | P4tents1, LLC | Pressure sensitive touch screen system, method, and computer program product for hyperlinks |
US10649578B1 (en) | 2011-08-05 | 2020-05-12 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10209809B1 (en) | 2011-08-05 | 2019-02-19 | P4tents1, LLC | Pressure-sensitive touch screen system, method, and computer program product for objects |
US10222892B1 (en) | 2011-08-05 | 2019-03-05 | P4tents1, LLC | System, method, and computer program product for a multi-pressure selection touch screen |
US10222894B1 (en) | 2011-08-05 | 2019-03-05 | P4tents1, LLC | System, method, and computer program product for a multi-pressure selection touch screen |
US10222895B1 (en) | 2011-08-05 | 2019-03-05 | P4tents1, LLC | Pressure-based touch screen system, method, and computer program product with virtual display layers |
US10222893B1 (en) | 2011-08-05 | 2019-03-05 | P4tents1, LLC | Pressure-based touch screen system, method, and computer program product with virtual display layers |
US10222891B1 (en) | 2011-08-05 | 2019-03-05 | P4tents1, LLC | Setting interface system, method, and computer program product for a multi-pressure selection touch screen |
US10275087B1 (en) | 2011-08-05 | 2019-04-30 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10275086B1 (en) | 2011-08-05 | 2019-04-30 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10649579B1 (en) | 2011-08-05 | 2020-05-12 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10345961B1 (en) | 2011-08-05 | 2019-07-09 | P4tents1, LLC | Devices and methods for navigating between user interfaces |
US10365758B1 (en) | 2011-08-05 | 2019-07-30 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10386960B1 (en) | 2011-08-05 | 2019-08-20 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10788931B1 (en) | 2011-08-05 | 2020-09-29 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10782819B1 (en) | 2011-08-05 | 2020-09-22 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10725581B1 (en) | 2011-08-05 | 2020-07-28 | P4tents1, LLC | Devices, methods and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10671212B1 (en) | 2011-08-05 | 2020-06-02 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10671213B1 (en) | 2011-08-05 | 2020-06-02 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10664097B1 (en) | 2011-08-05 | 2020-05-26 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10521047B1 (en) | 2011-08-05 | 2019-12-31 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10534474B1 (en) | 2011-08-05 | 2020-01-14 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10540039B1 (en) | 2011-08-05 | 2020-01-21 | P4tents1, LLC | Devices and methods for navigating between user interface |
US10551966B1 (en) | 2011-08-05 | 2020-02-04 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10592039B1 (en) | 2011-08-05 | 2020-03-17 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product for displaying multiple active applications |
US9417754B2 (en) | 2011-08-05 | 2016-08-16 | P4tents1, LLC | User interface system, method, and computer program product |
US10656753B1 (en) | 2011-08-05 | 2020-05-19 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10013095B1 (en) | 2011-08-05 | 2018-07-03 | P4tents1, LLC | Multi-type gesture-equipped touch screen system, method, and computer program product |
US10209806B1 (en) | 2011-08-05 | 2019-02-19 | P4tents1, LLC | Tri-state gesture-equipped touch screen system, method, and computer program product |
US10649580B1 (en) | 2011-08-05 | 2020-05-12 | P4tents1, LLC | Devices, methods, and graphical use interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10649571B1 (en) | 2011-08-05 | 2020-05-12 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10649581B1 (en) | 2011-08-05 | 2020-05-12 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10656759B1 (en) | 2011-08-05 | 2020-05-19 | P4tents1, LLC | Devices, methods, and graphical user interfaces for manipulating user interface objects with visual and/or haptic feedback |
US10656756B1 (en) | 2011-08-05 | 2020-05-19 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10656758B1 (en) | 2011-08-05 | 2020-05-19 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10656754B1 (en) | 2011-08-05 | 2020-05-19 | P4tents1, LLC | Devices and methods for navigating between user interfaces |
US10642413B1 (en) | 2011-08-05 | 2020-05-05 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10656757B1 (en) | 2011-08-05 | 2020-05-19 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10656755B1 (en) | 2011-08-05 | 2020-05-19 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US10656752B1 (en) | 2011-08-05 | 2020-05-19 | P4tents1, LLC | Gesture-equipped touch screen system, method, and computer program product |
US9727031B2 (en) | 2012-04-13 | 2017-08-08 | Tk Holdings Inc. | Pressure sensor including a pressure sensitive material for use with control systems and methods of using the same |
US9493342B2 (en) | 2012-06-21 | 2016-11-15 | Nextinput, Inc. | Wafer level MEMS force dies |
US9487388B2 (en) | 2012-06-21 | 2016-11-08 | Nextinput, Inc. | Ruggedized MEMS force die |
US9032818B2 (en) | 2012-07-05 | 2015-05-19 | Nextinput, Inc. | Microelectromechanical load sensor and methods of manufacturing the same |
US9696223B2 (en) | 2012-09-17 | 2017-07-04 | Tk Holdings Inc. | Single layer force sensor |
US9902611B2 (en) | 2014-01-13 | 2018-02-27 | Nextinput, Inc. | Miniaturized and ruggedized wafer level MEMs force sensors |
US10466119B2 (en) | 2015-06-10 | 2019-11-05 | Nextinput, Inc. | Ruggedized wafer level MEMS force sensor with a tolerance trench |
US10712864B2 (en) * | 2016-04-28 | 2020-07-14 | Au Optronics Corp. | Dual-mode capacitive touch display panel |
US10416804B2 (en) * | 2016-04-28 | 2019-09-17 | Au Optronics Corp. | Dual-mode capacitive touch display panel |
US20190354228A1 (en) * | 2016-04-28 | 2019-11-21 | Au Optronics Corp. | Dual-mode capacitive touch display panel |
US20170315657A1 (en) * | 2016-04-28 | 2017-11-02 | Au Optronics Corp. | Dual-mode capacitive touch display panel |
US11946817B2 (en) | 2017-02-09 | 2024-04-02 | DecaWave, Ltd. | Integrated digital force sensors and related methods of manufacture |
US11604104B2 (en) | 2017-02-09 | 2023-03-14 | Qorvo Us, Inc. | Integrated piezoresistive and piezoelectric fusion force sensor |
US11808644B2 (en) | 2017-02-09 | 2023-11-07 | Qorvo Us, Inc. | Integrated piezoresistive and piezoelectric fusion force sensor |
US11243125B2 (en) | 2017-02-09 | 2022-02-08 | Nextinput, Inc. | Integrated piezoresistive and piezoelectric fusion force sensor |
US11255737B2 (en) | 2017-02-09 | 2022-02-22 | Nextinput, Inc. | Integrated digital force sensors and related methods of manufacture |
US11221263B2 (en) | 2017-07-19 | 2022-01-11 | Nextinput, Inc. | Microelectromechanical force sensor having a strain transfer layer arranged on the sensor die |
US11423686B2 (en) | 2017-07-25 | 2022-08-23 | Qorvo Us, Inc. | Integrated fingerprint and force sensor |
US11946816B2 (en) | 2017-07-27 | 2024-04-02 | Nextinput, Inc. | Wafer bonded piezoresistive and piezoelectric force sensor and related methods of manufacture |
US11609131B2 (en) | 2017-07-27 | 2023-03-21 | Qorvo Us, Inc. | Wafer bonded piezoresistive and piezoelectric force sensor and related methods of manufacture |
US11243126B2 (en) | 2017-07-27 | 2022-02-08 | Nextinput, Inc. | Wafer bonded piezoresistive and piezoelectric force sensor and related methods of manufacture |
US11898918B2 (en) | 2017-10-17 | 2024-02-13 | Nextinput, Inc. | Temperature coefficient of offset compensation for force sensor and strain gauge |
US11579028B2 (en) | 2017-10-17 | 2023-02-14 | Nextinput, Inc. | Temperature coefficient of offset compensation for force sensor and strain gauge |
US11965787B2 (en) | 2017-11-02 | 2024-04-23 | Nextinput, Inc. | Sealed force sensor with etch stop layer |
US11385108B2 (en) | 2017-11-02 | 2022-07-12 | Nextinput, Inc. | Sealed force sensor with etch stop layer |
US11874185B2 (en) | 2017-11-16 | 2024-01-16 | Nextinput, Inc. | Force attenuator for force sensor |
US20190310143A1 (en) * | 2018-04-05 | 2019-10-10 | Samsung Display Co., Ltd. | Force sensor |
US10782195B2 (en) * | 2018-04-05 | 2020-09-22 | Samsung Display Co., Ltd. | Force sensor |
US11703972B2 (en) | 2018-04-05 | 2023-07-18 | Samsung Display Co., Ltd. | Force sensor |
US11698310B2 (en) | 2019-01-10 | 2023-07-11 | Nextinput, Inc. | Slotted MEMS force sensor |
US10962427B2 (en) | 2019-01-10 | 2021-03-30 | Nextinput, Inc. | Slotted MEMS force sensor |
Also Published As
Publication number | Publication date |
---|---|
KR101226440B1 (en) | 2013-01-28 |
US20070070047A1 (en) | 2007-03-29 |
JP2007095044A (en) | 2007-04-12 |
KR20070034720A (en) | 2007-03-29 |
JP4914149B2 (en) | 2012-04-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8199116B2 (en) | Display panel, display device having the same and method of detecting touch position | |
US7903096B2 (en) | Display panel, display apparatus having the same, and method thereof | |
US7936340B2 (en) | Display device and sensing signal processing apparatus | |
US7692729B2 (en) | Liquid crystal display including sensing unit | |
US7839392B2 (en) | Sensing circuit and display device having the same | |
US20070097278A1 (en) | Display substrate, method of manufacturing the same and display panel having the same | |
US8018428B2 (en) | Electrophoretic display panel, electrophoretic display device having the same and method for driving the same | |
US8253699B2 (en) | Display apparatus, method of driving the same, and sensing driver of display apparatus | |
US7742041B2 (en) | Liquid crystal display with touch sensing using variable capacitor sensor and photosensor | |
US7365562B2 (en) | Display device and method of testing sensing unit thereof | |
US9426882B2 (en) | Flexible printed circuit for connecting touch screen and liquid crystal display device using the same | |
TWI438692B (en) | Display device including sensing elements | |
US20070176868A1 (en) | Display device, liquid crystal display, and method thereof | |
US20150035766A1 (en) | Liquid crystal display device integrated with touch sensor | |
US9599848B2 (en) | Display device including compensation capacitors with different capacitance values | |
US20090073138A1 (en) | Display panel and display apparatus having the same | |
JP2009151138A (en) | Electrooptical device and electronic apparatus | |
US11693501B2 (en) | Display device | |
KR20070059270A (en) | Display substrate and method of the manufacturing and display panel having the same | |
KR101420438B1 (en) | Liquid Crystal Display |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SAMSUNG ELECTRONICS CO., LTD, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JEON, JIN;KIM, HYUNG-GUEL;SONG, JUN-HO;SIGNING DATES FROM 20060728 TO 20060824;REEL/FRAME:018293/0504 Owner name: SAMSUNG ELECTRONICS CO., LTD, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JEON, JIN;KIM, HYUNG-GUEL;SONG, JUN-HO;REEL/FRAME:018293/0504;SIGNING DATES FROM 20060728 TO 20060824 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: SAMSUNG DISPLAY CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SAMSUNG ELECTRONICS CO., LTD.;REEL/FRAME:029019/0139 Effective date: 20120904 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20200612 |